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Enhancement of radio-absorbing properties and thermal conductivity of polysiloxane-based magnetorheological elastomers by the alignment of filler particles

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dc.title Enhancement of radio-absorbing properties and thermal conductivity of polysiloxane-based magnetorheological elastomers by the alignment of filler particles en Cvek, Martin Moučka, Robert Sedlačík, Michal Babayan, Vladimír Artur Pavlínek, Vladimír
dc.relation.ispartof Smart Materials and Structures
dc.identifier.issn 0964-1726 OCLC, Ulrich, Sherpa/RoMEO, JCR 2017
utb.relation.volume 26
utb.relation.issue 9
dc.type article
dc.language.iso en
dc.publisher Iop Publishing Ltd.
dc.identifier.doi 10.1088/1361-665X/aa7ef6
dc.subject multifunctional composite en
dc.subject magnetorheological elastomer en
dc.subject electromagnetic shielding en
dc.subject shielding effectiveness en
dc.subject thermal properties en
dc.subject anisotropy en
dc.description.abstract A design for the fabrication of more effective, thin, light-weight radio-absorbers (RAs) based on magnetorheological elastomers (MREs) is demonstrated. Carbonyl iron (CI) particles were incorporated into polydimethylsiloxane matrix either homogeneously (isotropic) or with preferential orientation into chain-like structures (anisotropic). The reflection coefficient (R) of MRE-based single-layer metal-backed RAs was calculated on the basis of transmission line theory. The results show that the orientation of CI particles strongly enhances the permittivity of the systems, while preserving their permeability, which ultimately manifests itself in enhanced absorption of electromagnetic (EM) energy and reduced thickness of RAs. Thus, RAs based on anisotropic MREs are characterized by superior EM shielding capability in the microwave frequency range compared to their isotropic analogues, which offers great practical as well as economic advantages. Moreover, the thermal conductivity of both types of RAs was investigated, since efficient energy dissipation is important to prevent heat build-up under a radio-absorbing shield and thus to extend the service life of the protected device. en
utb.faculty University Institute
utb.faculty Faculty of Technology
utb.identifier.obdid 43876525
utb.identifier.scopus 2-s2.0-85028667122
utb.identifier.wok 000407457000003
utb.identifier.coden SMSTE
utb.source j-wok 2017-09-14T09:00:53Z 2017-09-14T09:00:53Z
dc.description.sponsorship Internal Grant Agency of Tomas Bata University in Zlin [IGA/CPS/2016/008]; Grant Agency of the Czech Republic [14-32114P]; Ministry of Education, Youth and Sports of the Czech Republic-Program NPU I [LO1504]; Operational Program Research and Development for Innovations - European Regional Development Fund (ERDF); project CPS-strengthening research capacity [CZ.1.05/2.1.00/19.0409]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Cvek, Martin
utb.contributor.internalauthor Moučka, Robert
utb.contributor.internalauthor Sedlačík, Michal
utb.contributor.internalauthor Babayan, Vladimír Artur
utb.contributor.internalauthor Pavlínek, Vladimír
utb.wos.affiliation [Cvek, Martin; Moucka, Robert; Sedlacik, Michal; Babayan, Vladimir; Pavlinek, Vladimir] Tomas Bata Univ Zlin, Univ Inst, Ctr Polymer Syst, Trida T Bati 5678, Zlin 76001, Czech Republic; [Cvek, Martin] Tomas Bata Univ Zlin, Fac Technol, Ctr Polymer, Vavreckova 275, Zlin 76001, Czech Republic
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